Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KF4WRU callsign genealogy
Currently held by BROOKS JR, WILLIAM O
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by KF4WRU's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KF4WRU.
- Brooks JR, William OTNgranted 2008-02-21cancelled 2010-12-17